The 12th gen Core i9-12900H is approximately 30 percent faster than the average laptop or mini PC running on the competing Zen 3 Ryzen 9 5900HX. What Intel doesn't want you to know, however, is that the chipmaker had to up the power consumption by noticeable margins in order to outperform the AMD series.
https://www.notebookcheck.net/27-AMD-Ryzen-9-5900HX-PCs-vs-the-Core-i9-12900H-Intel-comes-out-on-top-but-there-s-a-catch.604502.0.html